Stool



FIG. 1 is a perspective view of a stool showing my new design;

FIG. 2 is a front perspective view thereof;

FIG. 3 is a left side perspective view thereof;

FIG. 4 is a rear perspective view thereof; and,

FIG. 5 is a top plan view thereof. 

CLAIM The ornamental design for a stool, as shown and described. 